Abstract: A power source which is self-contained and is comprised of first and second current carrying elements separated by a layer of insulation material. A first of the elements being the negative pole of the power source and being formed of a mixture of silica, carbon, selenium, tantalum, copper and cadmium in weight ratios of 38.0%, 28.5%, 9.5%, 4.25%, 9.5% and 9.5%, respectively. The second element is comprised of a mixture of silica, carbon, selenium and tantalum. The elements and the insulating layer are coupled together in a compact package having end terminals coupled to respective first and second elements.

Abstract: An air cooling unit for a vehicle having a source of energy, such as heat from crankcase oil or transmission oil or a source of electrical power, such as an alternator. The cooling unit is of the absorption type and includes a condenser in series with an evaporator, an absorber and a boiler. The cooling unit is provided with a refrigerant, such as ammonia, and an absorption fluid, such as water. Hydrogen gas can optionally be placed in the cooling unit to move between the evaporator and the absorber to reduce the partial pressure of the refrigerant. A return line in the form of a coil extends from the boiler to an inlet of the absorber to return the absorption fluid to the absorber after the absorption fluid has been separated by heat from the refrigerant gas in the boiler. All of the components of the cooling unit are sized, shaped and located so that the cooling unit provides a compact package capable of being fitted into a relatively small space.